CVE-2026-0257
Palo Alto Networks · published 2026-05-13
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-05-29).
- CISA's name for it: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
- CISA's description: Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.
- Known ransomware campaign use, per CISA: Known
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Palo Alto Networks, Inc. via the CVE Program.
Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Palo Alto Networks | Cloud NGFW | All: unaffected |
| Palo Alto Networks | PAN-OS | 12.1.0 – before 12.1.7, 12.1.4-h6: affected 11.2.0 – before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17: affected 11.1.0 – before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33: affected 10.2.0 – before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34: affected |
| Palo Alto Networks | Prisma Access | 10.2.0 – before 10.2.10-h36: affected 11.2.0 – before 11.2.7-h13: affected |
Added by siemens-SADP (Authorized Data Publisher)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | RUGGEDCOM APE1808 | 0 – before *: affected |
Products named in NVD's CPE match criteria (3)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*cpe:2.3:a:paloaltonetworks:prisma_access:-:*:*:*:*:*:*:*cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 4.0: 7.8 HIGH — as published by Palo Alto Networks, Inc. (Secondary)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:Red - CVSS 3.1: 9.1 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://security.paloaltonetworks.com/CVE-2026-0257
- https://cert-portal.siemens.com/productcert/html/ssa-967325.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257
Source dates: published 2026-05-13, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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